Monday, 7 November 2005
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Identification of Qtls Underlying Scn Resistance in Pi 494182.
Mohsen Ebrahimi1, Yiwu Chen2, Prakash Arelli3, and Dechun Wang1. (1) Michigan State University, A384-g Plant And Soil Science Build, East Lansing, MI 48824, (2) Michigan State University,, Michigan State University A384-g Plant And Soil Science Build,, East Lansing, MI 48824,, East Lansing, MI 48824, (3) USDA-ARS,, USDA-ARS, 605 Airways Blvd., Jackson, TN 38301
Using resistant cultivars of soybean is the most efficient and environmentally friendly way of controlling soybean cyst nematode (SCN). Soybean plant introduction (PI)494182 is a new source of resistance to SCN races 3 and 5. The objectives of this study were to identify QTLs underlying SCN resistance in this new source of resistance. The mapping population consists of 160 F3:4 lines derived from the cross PI 494182 x Skylla. Skylla is a high yielding soybean cultivar and is susceptible to SCN races 3 and 5. The mapping population is currently evaluated for resistance to SCN races 3 and 5 and genotyped with over 100 polymorphic simple sequence repeat (SSR) markers
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